· Impulsivity: consists of risk-taking and liveliness; risk-taking consists of sensation-seeking and venturesomeness

· Sensation-Seekers: prefer high level of stimulation, have lower levels of MAO à abundance of neurotransmitters at the synapse à less inhibition of CNS à less behavioral controls à desire for more environmental stimulation; 4 facets include disinhibition, thrill/adventure seeking, experience seeking, boredom-susceptibility; more liberal sexual attitudes for both sexes (more playful, permissive, more sexual experience, more partners), BUT! Female social status is unrelated to risky behavior while male social status is more positively correlated with risky behavior; for general deviance, those ss’s score highly on the subfacet of disinhibition; relationship between Es and psychopathy is due to the disinhibition facet of impulsivity

· Cloninger’s Tridimensional: Novelty-seeking (lower levels of DA), Harm Avoidance (lower levels of ST – becomes sensitive to cues of pain/punishment – sensitive to BIS?), Reward dependence (lower levels of NE), perseverate to work towards things that will bring reward – sensitive to BAS?)

· Morningness and Eveningness: